Non-visible component for storing and retrieving files. Use this component to write or read files on your device. The default behaviour is to write files to the private data directory associated with your App. The Companion is special cased to write files to /sdcard/AppInventor/data to facilitate debugging. If the file path starts with a slash (/), then the file is created relative to /sdcard. For example writing a file to /myFile.txt will write the file in /sdcard/myFile.txt.